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253289 = 1913331
BaseRepresentation
bin111101110101101001
3110212110002
4331311221
531101124
65232345
72103311
oct756551
9425402
10253289
11163333
121026b5
138b39a
1468441
15500ae
hex3dd69

253289 has 4 divisors (see below), whose sum is σ = 266640. Its totient is φ = 239940.

The previous prime is 253273. The next prime is 253307. The reversal of 253289 is 982352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253289 - 24 = 253273 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253289.

It is not an unprimeable number, because it can be changed into a prime (253229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6647 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (66660).

2253289 is an apocalyptic number.

It is an amenable number.

253289 is a deficient number, since it is larger than the sum of its proper divisors (13351).

253289 is a wasteful number, since it uses less digits than its factorization.

253289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13350.

The product of its digits is 4320, while the sum is 29.

The square root of 253289 is about 503.2782530569. The cubic root of 253289 is about 63.2711084749.

The spelling of 253289 in words is "two hundred fifty-three thousand, two hundred eighty-nine".

Divisors: 1 19 13331 253289